Răspunsuri

2014-10-25T20:24:00+03:00
Transformam mm partati in metri patrati:

0,2\ mm^2=0,2\cdot (10^{-3}\ m)^2=0,2 \cdot 10^{-6}m^2

Aplicam formula pt. presiune:

p=\dfrac{F}{S}=\dfrac{25}{0,2\cdot 10^{-6}}=125\cdot 10^6\ Pa=125\ MPa

Adica 125 Mega-Pascali